One '68 327 I had, had the weight parallel to pass frame rail with counterweight to the front.I would think the valve would be universal fit as it would match manifold ID.A '64 Impala 327-300HP, ram horn manifold had the weight to the rear of manifold.

Gary, my 69 is still running hooker headers, but I just looked at my exhaust manifolds for the 70 Z project. I cut off what was left of the original exhaust. My heat riser has the weight to the outside, parallel with the frame rail. Being 57, I can't post pictures. I can email them to you.Buddy

Gary, my 69 is still running hooker headers, but I just looked at my exhaust manifolds for the 70 Z project. I cut off what was left of the original exhaust. My heat riser has the weight to the outside, parallel with the frame rail. Being 57, I can't post pictures. I can email them to you.Buddy

I sent it to you in the PM you sent Buddy. Can we assume the 70's were the same?

One '68 327 I had, had the weight parallel to pass frame rail with counterweight to the front.I would think the valve would be universal fit as it would match manifold ID.A '64 Impala 327-300HP, ram horn manifold had the weight to the rear of manifold.

Hey Everett like what's in this pic. LM1 350/255 69 Impala. The one I have in hand and the one I'll be be getting in a few days are exactly like what's in my 69 Impala in this pic.

Compared to this pic the 2 I have are wrong then. Unless other members show a clear view of an original I guess we'll never really know. Can anyone confirm what is correct? So far JohnZ has the best overall view that would be the same as the pic. $240.00...that's a load of change. I paid $5.00 a piece for the ones I have. I'll just keep digging. The right one is bound to pop up.

Gary, something happened to my camera. All pics are coming up blank! It looks like johns z's, but the weight is to the outside parallel to the frame rails

That's OK. Is the block on the end of the lever pointing to the front of the car or the firewall? Something I have been wondering about is was the heat riser just installed in any position even at the plant? and was there different ones.

According to my July 1969 issue of the 1967-1969 Camaro Master Parts catalog, the heat riser valve is the same part number for the 1967 thru 1969, 302ci, 327ci, and 350 ci engines and that part number is #3887023. I have my original 1968 Z28 heat riser valve in my hand and it looks identical to the NOS one shown above. I would take a picture of mine but being it looks identical, I see no reason for another picture.